Setting a brand up from nothing takes a while, and studios often build the next brand for the same client, or a sub-brand, from the same bones.
Each brand card on your dashboard now has a Duplicate action beside Delete. It makes a new draft with the same colours, typefaces, sections and files, puts "copy" after its name and opens it in the editor. The files are copied as well, so deleting one brand never takes a picture out of the other.
Being paid for, published or password-protected doesn't carry over. The copy is a fresh draft of its own, and the brand you copied from stays exactly as it was.